Asda's store in Sinfin is one of 18 in the UK where employees are in consultation over changes to working hours and staffing levels.

The supermarket employs 354 people in Sinfin. Of these, 129 are involved in the consultation process.

No figures have been released for the number of possible redundancies in Derby and no UK store closures are planned.

Staffing arrangements at 59 other Asda stores are also under review, a result of differing shopping habits related to self-scanning checkouts and online ordering.

The GMB union is in talks with the retailer over its plans to cut costs at underperforming stores. According to reports, a total of 3,257 employees are involved in the consultation process across the 18 outlets.

An Asda spokesman said: "We are currently in discussions with a number of our stores about changes that are needed to the number of hours required to run that store for our customers.

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"It is common practice for a supermarket to need to make changes to hours based on the changing shopping habits of customers, and as ever we'll work with our colleagues to try and find the right way to ensure we have the right people, in the right place at the right time for our customers.

"We understand that any conversations about change are unsettling but it is always our utmost priority to find alternative roles or working patterns for impacted colleagues."

Gary Carter, national officer of the GMB union, said: "GMB is in consultation with Asda over the situation and is currently in discussion with senior management."

Asda employs a total of 165,000 workers in 645 stores and is owned by American retail giant Walmart.